shields. but if stronger military action proves necessary to stop the barrage of rockets, israel will not hesitate to do what is necessary to defend our people. >> secretary of state hillary clinton is heading to jerusalem to help secure a truce before israel launches a ground invasion. u.n. secretary-general ban ki moon is also there and nine arab leaders are showing solidarity with the palestinians. a big change since the last serious fighting four years ago. earlier today at the u.n., the united states blocked a joint statement condemning the conflict because it didn't mention the root cause which the u.s. says is hamas missile attacks. nbc's martin fletcher is in tel aviv and martin, if there's a talk of cease-fire, what is israel doing dropping leaflets? >> reporter: that's a good question. israel actually -- it has not said that the cease-fire is as far advanced as the arabs have. israel is insisting on a long-term solution and they haven't got that yet. so what they're doing is still preparing their way for a possible ground invasion if these talks of a truce fall through.